2 Cellular Respiration (Opposite of Photosynthesis) Overall equation:C6H12O6 + 6O2 6CO2 + 6H2O + energy(glucose + oxygen) (carbon dioxide + water)Releases energy by breaking down glucoseOccurs in all cells in all living things(Plants go through cellular respiration at night)In the presence of oxygen, cellular respiration produces a total of 36 ATP molecules per glucose.
3 2 Types of Cellular Respiration 1. Aerobic respiration – does require oxygenOccurs in the mitochondriaProduces more ATP (34)2. Anaerobic respiration- does NOT require oxygen-Occurs in the cytoplasm-Produces less ATP (2)
4 Three Stages of Cellular Respiration Glycolysis(takes place in the cytoplasm)2. Krebs Cycle(takes place in the mitochondria)3. Electron Transport Chain
6 Glycolysis 1st stage Takes place in the cytoplasm Has a total of 2 ATP (Produces 4 ATP but uses 2 ATP)Anaerobic respiration (no oxygen)
7 Krebs Cycle (AKA: Citric Acid Cycle) 2nd stageTakes place in mitochondriaProduces 2 ATPAerobic Respiration (requires oxygen)
8 Electron Transport Chain 3rd stageTakes place in the mitochondriaProduces 32 ATPAerobic Respiration (requires oxygen)
9 Electron Transport Chain Cellular RespirationOccurs in cytoplasmOccurs in mitochondriaCarbon dioxide+Water36 ATPKrebs Cycle2 ATPElectron Transport Chain32 ATPGlycolysis2 ATPGlucose+Oxygen=anaerobicaerobic
10 Anaerobic Respiration Fermentation: releases ENERGY from FOOD by producing ATP in the ABSENCE of OXYGENBreaks down GLUCOSE (SUGAR)Does NOT require oxygen1. Alcoholic fermentationOccurs in yeast cellsProduces 2 ATP, carbon dioxide and alcoholCarbon dioxide causes bread to rise2. Lactic Acid fermentationOccurs in muscle cellsProduces 2 ATP, carbon dioxide and lactic acidLactic acid causes muscle soreness
13 Cellular Respiration Review/Close aerobic muscle anaerobicLactic Acid fermentation mitochondria 36Alcoholic fermentation cellular respiration1.________ is the process that releases energy by breaking down molecules in food.*Cellular Respiration2.When food is broken down in the presence of oxygen it is called _________.*Aerobic3. Aerobic respiration takes place in the ___________.*Mitochondria4. Overall, a total of ____ ATP molecules are produced during aerobic respiration.*365. __________ respiration takes place in the absence of oxygen.*Anaerobic6. Two types of anaerobic respiration are __________, which takes place in yeast cells and _________ which takes place in muscle cells.*Alcoholic fermentation*Lactic Acid fermentation
14 Comparing Photosynthesis and Cellular Respiration FunctionStores EnergyEnergy releaseLocationChloroplastMitochondriaReactantsCarbon dioxide and waterGlucose and oxygenProductsEquation6CO2+6H2O+light 6O2+C6H12O66O2+C6H12O6 6CO2+6H2O+energy
16 What is the purpose of photosynthesis What is the purpose of photosynthesis? What is the purpose of cellular respiration?Where does photosynthesis occur? Cellular respiration?Describe what would happen if the amount of sunlight available to a plant became limited. How would that affect cellular respiration?What are the reactants in each of these equations? What are the products?